'\" t
.\"     Title: nvme-error-log
.\"    Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 10/20/2020
.\"    Manual: NVMe Manual
.\"    Source: NVMe
.\"  Language: English
.\"
.TH "NVME\-ERROR\-LOG" "1" "10/20/2020" "NVMe" "NVMe Manual"
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.SH "NAME"
nvme-error-log \- Send NVME Error log page request, return result and log
.SH "SYNOPSIS"
.sp
.nf
\fInvme error\-log\fR <device>  [\-\-log\-entries=<entries> | \-e <entries>]
                         [\-\-raw\-binary | \-b]
                         [\-\-output\-format=<fmt> | \-o <fmt>]
.fi
.SH "DESCRIPTION"
.sp
Retrieves NVMe Error log page from an NVMe device and provides the returned structure\&.
.sp
The <device> parameter is mandatory and may be either the NVMe character device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1)\&.
.sp
On success, the returned error log structure may be returned in one of several ways depending on the option flags; the structure may parsed by the program and printed in a readable format or the raw buffer may be printed to stdout for another program to parse\&.
.SH "OPTIONS"
.PP
\-e <entries>, \-\-log\-entries=<entries>
.RS 4
Specifies how many log entries the program should request from the device\&. This must be at least one, and shouldn\(cqt exceed the device\(cqs capabilities\&. Defaults to 64 log entries\&.
.RE
.PP
\-b, \-\-raw\-binary
.RS 4
Print the raw error log buffer to stdout\&.
.RE
.PP
\-o <format>, \-\-output\-format=<format>
.RS 4
Set the reporting format to
\fInormal\fR,
\fIjson\fR, or
\fIbinary\fR\&. Only one output format can be used at a time\&.
.RE
.SH "EXAMPLES"
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Get the error log and print it in a human readable format:
.sp
.if n \{\
.RS 4
.\}
.nf
# nvme error\-log /dev/nvme0
.fi
.if n \{\
.RE
.\}
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Print the raw output to a file:
.sp
.if n \{\
.RS 4
.\}
.nf
# nvme error\-log /dev/nvme0 \-\-raw\-binary > error_log\&.raw
.fi
.if n \{\
.RE
.\}
.sp
It is probably a bad idea to not redirect stdout when using this mode\&.
.RE
.SH "NVME"
.sp
Part of the nvme\-user suite
